# Monitoring resources

To ensure that the infrastructure for Collaboration Server On-Premises is correctly scaled and can handle the load you need to monitor the following servers:

* **SQL server** – monitor CPU and memory usage

  * If the consumption of these resources reaches 70-90%, consider increasing the size or the number of nodes of the SQL server.

* **Redis server** – monitor CPU and memory usage

  * If the consumption of these resources reaches 70-90%, consider increasing the size or the number of nodes of the Redis server.

* **On-Premises server** – monitor CPU and memory usage, and the processing time of requests from [metric logs](request-summary.md)

  * If the consumption of these resources reaches 70-90% or you notice a significant increase of the `duration` values in metric logs:

    * consider scaling Collaboration Server On-Premises instances if high usage is caused by users and collaboration sessions,
    * consider scaling (or start using) [Collaboration Worker](installation/configuration/worker.md) instances if high usage is caused by editor bundle features

Read more about resources requirements in a [dedicated article](requirements.md).

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Full index of the Cloud Services documentation: [llms.txt](../../../llms.txt)